Table component demo data is being added when importing an edited table

[vsgoulart]

Describe the Bug

When we added the table component we added feature of creating some initial table component, but with that we added the bug that creates this initial demo data on a table component that was edited via properties panel, we should avoid creating demo data on edited tables because we can't guarantee the table has compatible columns.

Steps to Reproduce

1. Create a table, edit the dataSource via properties panel
2. Save this form schema
3. Reload the editor and import the saved schema
4. The initial demo data is created based on the id and not on the dataSource

Expected Behavior

Create the initial demo data only if the dataSource has the same value as the id and only if the columns are compatible with the demo data

Environment

• Host (Browser/Node version), if applicable: [e.g. MS Edge 18, Chrome 69, Node 10 LTS]
• OS: [e.g. Windows 7]
• Library version: [e.g. 2.0.0]